JP6524390B2 - mask - Google Patents

Description

The present invention relates to masks. More particularly, the present invention relates to a mask in which a water absorbing member is provided inside the mask.

Conventionally, a commercially available mask is composed of a mask main body in which a plurality of rectangular-cut cloths are superposed, and a cord or a rubber cord attached to each end of the length of the mask main body. . When wearing the glasses with the mask, there is a depression between the nose and the cheek surface, and there is a problem that exhalation leaks from the upper end of the mask and the glasses are obscured and it is difficult to see the glasses.
In order to solve this problem, insert a nose fit (for example, patent documents 1 to 3) or insert a buffer material (for example, patent documents 4 and 5) to reduce the air coming out of the mask upper end to reduce eyeglass wearing It is preventing the cloudy at the time.

JP 2007-185470 A JP, 2010-137034, A JP, 2013-75130, A JP, 2006-340971, A JP 2007-252854 A

However, even if the nose fit and shock absorbing material are provided, the face moves. There is a gap between the nose and buccal surface, and when it is cold, the exhalation leaks and the glasses become cloudy, and when the glasses cool, the mask body fabric immediately below the nose fit or cushioning material is used. Eyeglasses may also be clouded by passing breaths.

An object of the present invention is to provide a mask that further suppresses fogging of the glasses by further reducing the exhalation in contact with the glasses.

In view of the above problems, the inventors of the present invention earnestly found that, by placing an absorbing member at the upper end of the inside of the mask, it absorbs the exhalation that is going to come out of the upper part of the mask. It can be found that the present invention can be achieved.
The present invention is a mask worn on the face, which comprises: a mask body; fixing means for fixing the mask body to the face; and an inner side of the mask body, the left and right sides of the upper end of the mask body. A band-like or linear water-absorbing member provided along the direction;
The water absorbing member is a water absorbing sheet in which a water absorbing sheet containing a water absorbing resin is further wrapped in a fabric ,
The thickness of the water-absorbent sheet containing the water-absorbing resin is a mask, wherein 6mm der Rukoto less than 1 mm.

Furthermore, the present invention is characterized in that the above-mentioned fabric is a hydrophilic fabric .
The invention further Ri Na and strip-shaped or linear shaped holding member is provided with the water absorbing member along a lateral direction of the upper portion of the mask body, water absorbing sheet comprising the water-absorbent resin is further wrapped in fabric It is characterized in that the absorbent sheet is fixed so as to cover the above-mentioned shape holding member.

Further, the present invention is a method of using the mask in which the upper end of the mask is fitted to the face so that no gap is formed between the upper end of the mask and the face when the mask is worn on the face. .

According to the present invention, since the water absorbing member is provided at the upper end of the mask, the exhalation leaking from the upper part of the mask can be absorbed by the water absorbing member and the exhalation coming out of the upper part of the mask can be further reduced. . Furthermore, the moisture in the mask can be reduced, and even people who do not use glasses can improve stuffiness and shortness of breath and get a dry feeling.

According to the present invention, since the water-absorbent sheet is wrapped in a cloth, the water-absorbent resin can be prevented from coming into contact with the face from the water-absorbent sheet, and the mask can be worn more comfortably. In addition, the absorption sheet of the mask and the face can be fitted more easily, the gap is reduced, leakage of exhalation is reduced, and fogging of the glasses can be further suppressed.

According to the present invention, since the above-mentioned fabric is a hydrophilic fabric, breathable moisture is easily absorbed by the fabric, and the absorbed moisture is further absorbed by the absorbent member therein. As a result, the glasses are less likely to become cloudy.

According to the present invention, since the belt-like or linear shape-retaining member is provided together with the absorbing member along the left-right direction of the upper end of the mask main body, the upper end of the mask and the face can be fitted further. There will be less leakage and less fogging of the glasses.

According to the present invention, when the above mask is worn on the face, the upper end of the mask is placed on the face so that there is no gap between the upper end of the mask and the face, in particular between the nose and the cheek. Because of the way the mask is used to fit it, breath leakage is even less and the fogging of the glasses is even less.

(A) is a front view of the mask which is one embodiment of the present invention, and (b) is a sectional view which cut and expanded in the plane containing the XY axis in (a).

Hereinafter, embodiments of the present invention will be described in detail. The present invention is not limited to the following embodiments. Various modifications can be made to the following embodiments within the same and equivalent scope of the present invention.

The mask according to the present invention comprises a mask body, fixing means for fixing the mask body to the face, and a band-like or linear water-absorbing member provided along the left-right direction of the upper end of the mask body. .
The mask body is not particularly limited, and conventionally available masks can be used.
The fixing means for fixing the mask body to the face is not limited as long as it is used for the mask, and preferably a cord made of fibers is used. Instead of this cord, for example, an annular band or elastic cord hooked to the ear, a band or cord bound to the head, a temple of eyeglasses worn on the top of the ear, or the like can be used.

The band-like or linear water-absorbing member is a water-absorbent sheet containing a water-absorbent resin.
The water-absorbent resin in the present invention is not particularly limited whether it is a natural type or a synthetic type, but it is inexpensive and excellent in water absorption characteristics such as safety, durability, water absorption amount and water absorption speed, and there is no concern of decay. Is preferred. In particular, those having a large amount of water absorption are preferable because they absorb moisture during exhalation.

It is not particularly limited as long as it absorbs water as such, but a synthetic water-absorbent resin is particularly preferably mentioned. For example, a cross-linked product of partially neutralized polyacrylic acid, starch-acrylic acid graft weight Neutralization product of coalescence, hydrolyzate of starch-acrylonitrile graft polymer, saponified vinyl acetate-acrylic acid ester copolymer, isobutylene-maleic anhydride copolymer cross-linked product, acrylonitrile copolymer or acrylamide copolymer Hydrolyzate or crosslinked product thereof, acrylate-acrylamide copolymer crosslinked product, polyvinyl alcohol crosslinked product, modified polyethylene oxide crosslinked product, acrylamido-2-methylpropane sulfonate copolymer crosslinked product, (meth) acryloyl alkane sulfone Acid salt copolymer cross-linked product, cross-linked carboxylate Le cellulose salts, and the like crosslinked polymer of a cationic monomer. Among these, a cross-linked product of partially neutralized polyacrylic acid and a neutralized product of a starch-acrylic acid graft polymer are more preferable because they have particularly good water absorption and swelling properties, safety and economy.

These water-absorbent resins may be used alone or in combination of two or more. The water-absorbent resin may be granulated in a predetermined shape, and may have various shapes such as irregularly crushed, spherical, scaly, fibrous, rod-like, massive, powdery, etc. In order to improve the water absorption performance, it is more preferable to be in powder form.

The average particle size of the particles is not particularly limited, but preferably 30 to 850 μm, more preferably 60 to 400 μm. When it is larger than 30 μm, the powder of the water-absorbent resin hardly leaks from the water-absorbent sheet, and when smaller than 850 μm, the breath absorbability is good. The particle size distribution is not particularly limited, but preferably the particle size distribution is such that particles in the range of 30 to 850 μm are 95% by mass or more. Here, the average particle size means a mass average particle size, and the mass average particle size is plotted on each particle size distribution of the crosslinked polymer on a logarithmic probability paper with the particle size on the horizontal axis and the mass vertical axis on the vertical axis. It measures by the method of calculating | requiring the particle diameter of 50% of the whole. For example, the usual sieve shaking method can be applied.

The water absorption amount of the water absorbing resin is preferably 20 g / g or more and 1,000 g / g or less. If it is 20 g / g or more, the breath is absorbed and the glasses are less likely to become cloudy. If it is 1,000 g / g or less, there is no manufacturing problem, and furthermore, the gel that has absorbed breath has a suitable hardness and is less likely to leak from the water-absorbent sheet. The amount of water absorption can be controlled by various manufacturing conditions of the above-mentioned water absorbent resin.

The ratio of water holding amount / water absorption amount is preferably 0.55 to 1.00, and more preferably 0.65 to 1.00. If the ratio of water holding amount / water absorption amount is 0.55 or more, it is difficult to exhale the moisture in the breath once absorbed into the mask. The ratio of water retention amount / water absorption amount can be controlled by the type of monomer, crosslinking conditions, and the like.

Further, the water absorption speed of the water absorbent resin is preferably 5 to 50 seconds, more preferably 5 to 20 seconds. If the water absorption rate is 5 seconds or more, blocking of water-absorbent resins is less likely to occur due to the influence of humidity in the air, and it is easy to use because there is no "marcocoe" before use. When the water absorption speed is 50 seconds or less, breath can be absorbed quickly.

The water absorption amount, water retention amount and water absorption rate of the water absorbent resin can be measured by the following method.
[Water absorption]
A 1 g sample of a water absorbent resin was placed in a nylon mesh bag (250 mesh), and the whole bag was immersed in excess tap water. After 60 minutes of immersion, the entire bag is pulled up into the air, allowed to stand and drained for 15 minutes, and then the mass M (g) is measured to determine the water absorption capacity from the following formula.
In addition, operation similar to the above was performed using only the net bag, and the mass N (g) of this part was deducted as a blank. Water absorption amount = (M-N) / L
[Water holding capacity]
Prepare a centrifuge capable of exerting a centrifugal force of 150 G (1,100 rpm, r = 10 cm). A tea bag-like package containing a sample after measurement of water absorption was set in a centrifuge, and an empty tea bag-like package was set diagonally on it and centrifuged at 150 G × 90 seconds. The weight of each tea bag-like package is measured and calculated from the water retention amount (g / g) = (A-B) /1.0.
Water absorption speed
50 mL of tap water is put in a 100 mL glass beaker and stirred at 600 rpm using a magnet stirrer (diameter (center 8 mm, both ends 7 mm), fluororesin coated 30 mm long).
Next, 2.00 g of a sample is introduced into the vortex at one time, and the time (seconds) from the time of introduction to the time when the liquid level becomes horizontal after the vortex disappears is measured and taken as the water absorption speed.

The water-absorbent sheet in the present invention may simultaneously contain a water-insoluble water-absorbent and water-retaining material together with the above-mentioned water-absorbent resin. As water-insoluble water-absorbing and water-retaining materials, materials other than water-absorbing resins which swell by absorbing water, for example, organic materials such as pulp, water-absorbing fibers, coconut shells, firs, wood scraps, wood flour, cotton, sawdust, straw, coconut shell activated carbon, etc. Water-insoluble water-absorbing and water-retaining materials such as perlite, perlite, rock wool, porous ceramic, vermiculite, pumice and the like inorganic water-insoluble water-absorbing and water-retaining materials. Preferably it is a pulp.

Preferred as the composition of the water-absorbent sheet is a powder of a water-absorbent resin fixed on one side or both sides of a water-permeable substrate such as cloth (especially nonwoven fabric) or paper using a pressure-sensitive adhesive or a binder resin. Particularly preferred are those obtained by sandwiching a water-permeable substrate such as paper or cloth in a sandwich, and then integrating the water-absorbent resin by the embossing method or needle punch method; adhesive or binder resin on one side of the plastic film The water-absorbent resin powder is fixed on the adhesive surface using the adhesive tape of cellophane or vinyl, for example, by fixing the powder of the water-absorbent resin as it is or using the adhesive sheet of cellophane or vinyl. Or those covered with a water-permeable substrate such as a cloth and fixed by a pressure roll. Preferably, both sides are water permeable.

In addition, in order for the water-absorbent resin to absorb exhale evenly without absorption in the water-absorbent sheet, it is desirable that the water-absorbent resin be fixed to the sheet in a state in which the amount of water-absorbent resin per area is almost uniformly sandwiched. Among the materials, paper sheets and felt-like non-woven fabrics are particularly preferred. Felts are generally referred to as felts such as woven felts, press felts, needle punched felts, etc., and are described, for example, in the "Industrial Fiber Materials Handbook" (The Japan Society of Textile Machinery, pp. 362-381) Can be used. Paper, is not particularly limited basis weight of the felt is preferably from 50 to 500 g / ^{m 2,} in particular 90~300g / ^{m 2} is preferred.
The coated weight of the water-absorbent resin in the water-absorbent sheet is preferably 1.0 to 200 g / m ² , more preferably 2.0 to 100 g / m ² .

The above water-absorbent sheet is preferably wrapped in a cloth. When the water absorbing sheet is wrapped in the fabric, the powder of the water absorbing resin can be prevented from coming into contact with the face from the water absorbing sheet, and the mask can be worn more comfortably. In addition, it is preferable because the absorption sheet of the mask and the face can be fitted more easily, the gap is reduced, the leakage of exhalation is reduced, and the fogging of the glasses is reduced.
Examples of such a fabric include natural fibers such as cotton, wool, silk, cellulose and pulp, and synthetic resins or fibers such as polyester, nylon, acrylic, polyethylene, polypropylene, polyurethane, polystyrene, poval, and modified products thereof. Semi-synthetic fibers such as rayon and acetate, and mixed materials thereof can be applied. The form of the fabric may be any of a knitted fabric, a woven fabric and a non-woven fabric, but a non-woven fabric is preferred in terms of breathability.

In addition, when the fabric is a hydrophilic fabric, the moisture during exhalation is easily absorbed by the fabric, and the absorbed exhalation is further absorbed by the absorbent member. As a result, the glasses are more preferable because they are less likely to become cloudy.
Examples of such hydrophilic fabrics include, but are not limited to, fabrics composed of cotton, hemp, rayon, highly water-absorbent fibers, microfibers, and fibers such as modified cross-section yarns and yarns with different deniers. Among these, a fabric which is difficult to swell even when absorbed by water and which has a large surface water absorbing ability is preferable. As a measure of the water absorption capacity of the surface of the fabric, a fabric having a moisture value of 20.0% or more on the surface of the fabric measured by the moisture measurement method of the fabric surface described below is preferable.

Moisture measurement method: The fabric is hydrated (water at 15 to 20 ° C.), squeezed to a pickup rate of 100%, and left indoor at 25 ± 5 ° C. for 30 minutes, after which moisture on the surface of the fabric is measured by a moisture measuring device. Measure 10 times and use the average value as the measurement value. As the moisture measuring device, for example, “moisture moisture checker” (type: SK-940A, manufactured by Sato Keiki Seisakusho Co., Ltd.) can be used.

The method of wrapping the water absorbing sheet with the above-mentioned fabric is not particularly limited, but the water absorbing sheet may be put in a bag of the fabric or the water absorbing sheet may be placed on the fabric and then closed. The method for forming the bag is not particularly limited, and examples thereof include sewing, adhesive, ultrasonic welding, use of “magic tape” (trademark), and the like.

The water-absorbent sheet is formed in a band-like shape (strip-like shape) or a linear shape (rod-like shape), which should be determined according to the size of the mask. It is preferable that the length (length) of the water absorbing sheet is 1/2 to equal to the width of the mask, and the width (width) of the water absorbing sheet is 1/10 or more and 1/2 or less of the length of the mask. For example, if the width of the mask is 16 cm, the vertical length of the water absorbing sheet is 8 to 16 cm, and if the vertical width of the mask is 9 cm, the width of the water absorbing sheet is preferably 0.9 to 4.5 cm . The thickness of the water-absorbent sheet is preferably 1 mm or more and 6 mm or less. More preferably, it is 2 mm or more and 4 mm or less. Within this range, breath can be sufficiently absorbed, and fogging of the glasses can be suppressed.

  The water absorbing sheet is provided on the inner side (face side) of the mask and along the left and right direction of the upper part of the mask body. The fixing method is not particularly limited, and examples thereof include sewing, adhesive, ultrasonic welding, use of “magic tape” (trademark), and the like.

Further, it is preferable that a band-like or linear shape-retaining member is provided together with the water absorbing member along the left-right direction of the upper portion of the mask body.
As this shape holding member, those conventionally used are used, and there is no limitation as long as they are flexible and plastically deformable.
The material of the shape-retaining member is preferably a resin material, and examples thereof include polyolefin resins, polyvinyl chloride resins, and methacrylic resins. Among them, those containing a polyolefin resin as a main component are preferable. The shape-retaining member made of a polyolefin-based resin has high flexibility, so the shape can be changed relatively easily.

As the polyolefin resin, for example, polyethylene resin such as high density polyethylene resin, medium density polyethylene resin, low density polyethylene resin, linear low density polyethylene resin, polypropylene resin, ethylene-propylene copolymer, ethylene-pentene- (1) Copolymers, ethylene-vinyl acetate copolymer, ethylene- (meth) acrylate copolymer, ethylene-vinyl chloride copolymer, ethylene-propylene-butene copolymer, etc. may be mentioned, among which And high density polyethylene resins are preferably used.

The shape-retaining member made of a polyolefin-based resin has high flexibility, so that its shape can be changed relatively easily, and the mask body can be deformed into a desired shape and maintained in that state. . Since the mask body can be stably maintained in a deformed state and can be fitted on the face with certainty, the mask body can be prevented from shifting with respect to external load due to walking or exercise. .

The shape-retaining member is formed of a plastically deformable strip-like (strip-like) or linear (rod-like) member. The shape maintaining member preferably has an average thickness of about 0.05 to 1.5 mm, and more preferably about 0.15 to 1.0 mm in the case of a band plate shape. The length is preferably 1/4 to 3/4 of the width of the mask.

It does not specifically limit as method to fix a shape-retaining member to a mask main body, For example, sewing, adhesion | attachment by a hot-melt-adhesive agent, ultrasonic welding etc. are mentioned. Among them, hot melt adhesive or ultrasonic welding is used for attachment of the shape holding member made of resin material to the mask main body, and attachment of the shape holding member made of metal material for the mask main body Sewing is preferred in that each can be rigidly attached to one another.

FIG. 1 shows a mask according to an embodiment of the present invention. (A) is a front view of the mask which is one embodiment of the present invention, and (b) is a sectional view which cut and expanded in the plane containing the XY axis in (a).
In the mask 1, a rubber strap 3 is attached to a side portion of the mask main body 2, and a shape holding member 5 is attached to an upper end portion 4 of the mask main body 2. A water absorbing sheet 7 wrapped with a fabric 6 is fixed by an adhesive 8 so as to cover the upper side.

When the mask prepared as described above is worn on the face, the upper end of the mask is fitted to the face so that there is no gap between the upper end of the mask and the face. Even if there is no shape holding member, it is easy to fit by just attaching the water absorbing member, but the shape holding member is preferable because the upper end of the mask and the face are easily fitted. In the use of the mask of the present invention, it is preferable to use the water absorbent sheet 7 fitted on the face together with the shape holding member 5 in FIG.

EXAMPLES The present invention will be described by the following examples, but is not limited thereto.
[Create water-absorbent sheet]
Water-absorbent resin (cross-linked polyacrylic salt resin, surface cross-linked type: water absorption amount 359 g / g, water retention amount 255 g / g, water retention amount / water absorption amount 0.71, water absorption rate 15 seconds, between two 15 cm × 3 cm tissues) average particle size 350 .mu.m: manufactured by Sanyo Chemical Industries, Ltd.) was sprayed 50 g / m ² and recycled pulp 50 g / m ² to be substantially uniform, a temporary water sheet a unites with embossed after slightly damp Obtained.

This is placed on the center of a 9 cm x 15.5 cm rayon nonwoven fabric (20 g / m ^{2 of} fabric weight, 21.0% of moisture on the surface of the fabric according to the moisture measurement method described above) and rotated from both sides to overlap the end of the rayon nonwoven fabric It fixed by and obtained the water absorption sheet A. The thickness of the water absorbing sheet A was about 3 mm. At this time, the water absorbing sheet a is wrapped with a rayon non-woven fabric, and both sides are in an open state.
A water-absorbent sheet B was obtained in the same manner except using a PET non-woven fabric (20 g / m ² fabric weight, 17.5% moisture content of the surface of the fabric according to the above-described moisture measurement method) instead of rayon non-woven fabric. The thickness of the water absorbing sheet B was about 3 mm.

Create Mask
Commercially available three-layer masks a and b were prepared. On the mask a, a shape holding member (high density polyethylene resin) having a width of 3 mm and a length of 12 cm was attached and fixed in the lateral direction with an adhesive at a position of 12 mm from the upper end of the mask. The mask b had no shape holding member.
As shown in FIG. 1, a water absorbent sheet A was attached to the upper end portion of the mask a with an adhesive to produce a mask 1 of the present invention. Similarly, the water-absorbent sheet B was attached to the mask a, the water-absorbent sheet a was attached to the water-absorbent sheet a, and the mask b was applied to the mask b to produce masks 2, 3 and 4 of the present invention. The mask a was used as the mask 5 as it was.

[Mask evaluation]
With respect to the masks 1 to 5 prepared above, 10 persons wearing glasses were asked to evaluate the degree of cloudiness of the mask. I repeatedly went in and out of the building during the cold months of January and received the following ratings (points). The average points are shown in Table 1. It shows that it is hard to become cloudy if there are many points.
(Evaluation)
0 No effect of anti-fogging effect 2 Anti-fogging effect seems to be possible 4 Anti-fogging effect is clearly recognized 6 Slightly cloudy 8 Almost not cloudy 10 Not totally cloudy

  From the above Table 1, when the masks 4 and 5 are compared, it seems that the masks of the present invention tend to be more resistant to fogging than those provided only with the conventional shape-retaining member (nose fit). Furthermore, when Masks 1 to 3 are compared, the glasses tend to be less likely to be fogged than those that are made of the water absorbing sheet alone, and the hydrophilic fabric is more likely to be more likely to be fogged than the fabric. Recognize. From this, the mask of the present invention has the effect of being able to suppress fogging of the glasses.

REFERENCE SIGNS LIST 1 mask 2 mask main body 3 rubber string 4 upper end portion of mask main body 5 shape holding member 6 fabric 7 water absorbing sheet 8 adhesive

Claims (4)

A mask mounted on a face, the mask body, a fixing means for fixing the mask body to the face, and an inner side of the mask body along a lateral direction of an upper end of the mask body A band-like or linear water-absorbing member provided;
The water absorbing member is a water absorbing sheet in which a water absorbing sheet containing a water absorbing resin is further wrapped in a fabric ,
Mask thickness of the water-absorbent sheet containing the water-absorbent resin is characterized in der Rukoto more than 6mm 1 mm. Mask according to claim 1, wherein the fabric is hydrophilic fabric. Ri Na and strip-shaped or linear shaped holding member is provided with the water absorbing member along a lateral direction of the upper portion of the mask body,
2. A mask according to claim 1, wherein a water-absorbent sheet formed by further covering the water-absorbent sheet containing the water-absorbent resin in a cloth is fixed so as to cover the top of the shape-retaining member. When wearing the mask according to any one of claims 1 to 3 on the face, the upper end of the mask is fitted to the face so that no gap is formed between the upper end of the mask and the face. How to use the mask.

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